| 摘要 |
PROBLEM TO BE SOLVED: To enable accurate and simple evaluation of swelling with a comparatively inexpensive apparatus by a method wherein a dielectric constant of a surface layer of a skin is measured to determine the concentration of water in the surface layer of the skin from a dielectric relaxation of the water in the skin surface layer and swelling is evaluated based on the concentration of the water obtained. SOLUTION: A single open type electrode 2 is provided in a cylindrical probe case 3 to form a probe 1 for measuring dielectric relaxation and an end part of the electrode 2 of the probe 1 on the side opposite to the side thereof closely contacting a sample S is connected to an oscillation/receiving device 6 through a cable 4 and a connector 5. In a computer 7 into which an output signal of the oscillation/receiving device 6 is inputted, a complex dielectric constant is determined from an observation waveform of the surface of a skin to calculate the concentration of water. In other words, the dielectric constant of the surface of the skin is measured using a plurality of open type electrodes with varied electric lengths to determine a distribution of the concentration of water in the direction of depth of the skin surface layer from a relationship between a measured value of the dielectric constant and the electric length of the electrode. Swelling is evaluated from the concentration of water obtained. |
